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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// pretty-expanded FIXME #23616
#![allow(unknown_features)]
#![feature(box_syntax, io)]
use std::io::{self, Write};
fn f(wr: &mut Write) {
wr.write_all(b"hello").ok().expect("failed");
}
fn main() {
let mut wr = box io::stdout() as Box<Write>;
f(&mut wr);
}
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